Note 6 - Stock-Based Compensation - Restricted Stock and Restricted Stock Unit Activity (Details) (Restricted Stock Units (RSUs) [Member], USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended	6 Months Ended
	Mar. 28, 2015	Mar. 28, 2015
Restricted Stock Units (RSUs) [Member]
Balance (in shares)		197
Balance (in dollars per share)		$ 15.68
Units (in shares)	36	36
Granted (in dollars per share)		$ 21.96
Released (in shares)		(50)
Released (in dollars per share)		$ 14.99
Balance (in shares)	183	183
Balance (in dollars per share)	$ 17.09	$ 17.09